- EMDB-62193: Cryo-EM structure of the human CENP-A-H4 octasome. -
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基本情報
登録情報
データベース: EMDB / ID: EMD-62193
タイトル
Cryo-EM structure of the human CENP-A-H4 octasome.
マップデータ
試料
複合体: Cryo-EM structure of human subnucleosome
複合体: Histone H3-like centromeric protein A,Histone H4
複合体: Widom601 DNA FW (145-MER),Widom601 DNA RW (145-MER)
DNA: Widom601 DNA FW (145-MER)
DNA: Widom601 DNA RV (145-MER)
タンパク質・ペプチド: Histone H4
タンパク質・ペプチド: Histone H3-like centromeric protein A
キーワード
subnucleosome / NUCLEAR PROTEIN / DNA BINDING PROTEIN-DNA complex / DNA BINDING PROTEIN
機能・相同性
機能・相同性情報
CENP-A containing chromatin assembly / kinetochore assembly / protein localization to chromosome, centromeric region / condensed chromosome, centromeric region / mitotic cytokinesis / establishment of mitotic spindle orientation / chromosome, centromeric region / pericentric heterochromatin / negative regulation of megakaryocyte differentiation / protein localization to CENP-A containing chromatin ...CENP-A containing chromatin assembly / kinetochore assembly / protein localization to chromosome, centromeric region / condensed chromosome, centromeric region / mitotic cytokinesis / establishment of mitotic spindle orientation / chromosome, centromeric region / pericentric heterochromatin / negative regulation of megakaryocyte differentiation / protein localization to CENP-A containing chromatin / Replacement of protamines by nucleosomes in the male pronucleus / CENP-A containing nucleosome / Packaging Of Telomere Ends / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / Recognition and association of DNA glycosylase with site containing an affected purine / Cleavage of the damaged purine / Deposition of new CENPA-containing nucleosomes at the centromere / Mitotic Prometaphase / telomere organization / EML4 and NUDC in mitotic spindle formation / Recognition and association of DNA glycosylase with site containing an affected pyrimidine / Cleavage of the damaged pyrimidine / RNA Polymerase I Promoter Opening / Inhibition of DNA recombination at telomere / Assembly of the ORC complex at the origin of replication / Meiotic synapsis / SUMOylation of chromatin organization proteins / Regulation of endogenous retroelements by the Human Silencing Hub (HUSH) complex / Resolution of Sister Chromatid Cohesion / DNA methylation / Condensation of Prophase Chromosomes / Chromatin modifications during the maternal to zygotic transition (MZT) / SIRT1 negatively regulates rRNA expression / HCMV Late Events / ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression / PRC2 methylates histones and DNA / Regulation of endogenous retroelements by KRAB-ZFP proteins / Defective pyroptosis / HDACs deacetylate histones / Regulation of endogenous retroelements by Piwi-interacting RNAs (piRNAs) / RNA Polymerase I Promoter Escape / Nonhomologous End-Joining (NHEJ) / Transcriptional regulation by small RNAs / RHO GTPases Activate Formins / Formation of the beta-catenin:TCF transactivating complex / Activated PKN1 stimulates transcription of AR (androgen receptor) regulated genes KLK2 and KLK3 / RUNX1 regulates genes involved in megakaryocyte differentiation and platelet function / HDMs demethylate histones / G2/M DNA damage checkpoint / NoRC negatively regulates rRNA expression / B-WICH complex positively regulates rRNA expression / PKMTs methylate histone lysines / DNA Damage/Telomere Stress Induced Senescence / Pre-NOTCH Transcription and Translation / Meiotic recombination / Activation of anterior HOX genes in hindbrain development during early embryogenesis / RMTs methylate histone arginines / Transcriptional regulation of granulopoiesis / HCMV Early Events / structural constituent of chromatin / Separation of Sister Chromatids / nucleosome / nucleosome assembly / Recruitment and ATM-mediated phosphorylation of repair and signaling proteins at DNA double strand breaks / HATs acetylate histones / RUNX1 regulates transcription of genes involved in differentiation of HSCs / MLL4 and MLL3 complexes regulate expression of PPARG target genes in adipogenesis and hepatic steatosis / chromatin organization / Processing of DNA double-strand break ends / Senescence-Associated Secretory Phenotype (SASP) / Oxidative Stress Induced Senescence / Estrogen-dependent gene expression / chromosome, telomeric region / protein heterodimerization activity / Amyloid fiber formation / chromatin binding / protein-containing complex / DNA binding / RNA binding / extracellular exosome / extracellular region / nucleoplasm / nucleus / membrane / cytosol 類似検索 - 分子機能
Japan Agency for Medical Research and Development (AMED)
JP24ama121009
日本
Japan Agency for Medical Research and Development (AMED)
JP24ama121003
日本
引用
ジャーナル: Genes Cells / 年: 2025 タイトル: Cryo-EM Analysis of a Unique Subnucleosome Containing Centromere-Specific Histone Variant CENP-A. 著者: Osamu Kawasaki / Yoshimasa Takizawa / Iori Kiyokawa / Hitoshi Kurumizaka / Kayo Nozawa / 要旨: In eukaryotes, genomic DNA is stored in the nucleus as nucleosomes, in which a DNA segment is wrapped around a protein octamer consisting of two each of the four histones, H2A, H2B, H3, and H4. The ...In eukaryotes, genomic DNA is stored in the nucleus as nucleosomes, in which a DNA segment is wrapped around a protein octamer consisting of two each of the four histones, H2A, H2B, H3, and H4. The core histones can be replaced by histone variants or altered with covalent modifications, contributing to the regulation of chromosome structure and nuclear activities. The formation of an octameric histone core in nucleosomes is widely accepted. Recently, the H3-H4 octasome, a novel nucleosome-like structure with a histone octamer consisting solely of H3 and H4, has been reported. CENP-A is the centromere-specific histone H3 variant and determines the position of kinetochore assembly during mitosis. CENP-A is a distant H3 variant sharing approximately 50% amino acid sequence with H3. In this study, we found that CENP-A and H4 also formed an octamer without H2A and H2B in vitro. We determined the structure of the CENP-A-H4 octasome at 3.66 Å resolution. In the CENP-A-H4 octasome, an approximately 120-base pair DNA segment was wrapped around the CENP-A-H4 octameric core and displayed the four CENP-A RG-loops, which are the direct binding sites for another centromeric protein, CENP-N.